canary 更新的集群。 apiVersion: ran.openshift.io/v1alpha1 kind: ClusterGroupUpgrade metadata: name: cgu-upgrade-complete namespace: default spec: clusters: 1 - spoke1 enable: false managedPolicies: 2 UpgradeNotStarted status: "False" type: Ready copiedPolicies: - cgu-upgrade-complete-policy1-common-cluster-version-policy - cgu-upgrade-complete-policy2-common-pao-sub-policy managedPoliciesForUpgrade: placementBindings: - cgu-upgrade-complete-policy1-common-cluster-version-policy - cgu-upgrade-complete-policy2-common-pao-sub-policy placementRules: - cgu-upgrade-complete-policy1-common-cluster-version-policy

pool for updates. Typically, the strategy is to take some percentage of instances out of service, upgrade them, and then put them back into service before repeating the process with another set of instances controller and removed from the previous one: Essentially, rolling-updates are a way to upgrade a given number of pods at a time by moving pods from one replication controller to another. deployment using Add Service/RC option, you can see the Deployment in kubectl: Now let’s upgrade the Deployment to a higher version of nginx. Note that once upgraded, you you are unable to add

OpenShift Container Platform 集群。平台管理员可以通过转至 web 控制台中的 Administration → Cluster Settings 或查看 oc adm upgrade 命令的输出来查看新的更新选项。 红帽托管了一个公共 OpenShift Update Service (OSUS)，它根据官方 registry 中的 OpenShift Container 参数包括可用的更新，但不推荐因为应用到 集群的已知风险而不建议这样做。 输出示例 出示例 oc adm upgrade 命令查询 ClusterVersion 资源以获取可用更新的信息，并以人类可读格式显示 它。 直接检查 CVO 创建的底层可用性数据的一种方法是，使用以下命令查询 ClusterVersion 资源： $ oc adm upgrade --include-not-recommended Cluster version 14 candidate-4.14 如果您不希望 Cluster Version Operator 从升级建议服务获取可用的更新，您可以使用 OpenShift CLI 中 的 oc adm upgrade channel 命令配置空频道。例如，当集群有受限网络访问且没有本地可访问的升级 建议服务时，这个配置很有用。 警告 警告 红帽建议升级到 OpenShift Update Service

cluster upgrade. A cluster upgrade replaces the virtual machines and must be performed on the management cluster first. The documentation lists multiple pages of prerequisites and post-upgrade re-registration provider directly from the UI. With EKS, GKE and AKS, SUSE Rancher can now import, provision, upgrade, configure and secure clusters across all three environments directly using SUSE Rancher’s updated Kubernetes Operators to deploy and upgrade the Kubernetes cluster components. All updates to Kubernetes are performed with zero downtime to running workloads. The upgrade process can be triggered using the

Manage Single Cluster CN2 | 45 Overview | 45 Run Preflight and Postflight Checks | 45 Upgrade CN2 | 47 Uninstall CN2 | 48 Manage Multi-Cluster CN2 | 49 Attach a Workload Cluster | by adding or removing nodes. • Configure CN2 by using custom resource definitions (CRDs). 2 • Upgrade CN2 software by applying updated manifests. • Uninstall CN2 by deleting Contrail namespaces and contrail-analytics 7. To upgrade Contrail Analytics: helm -n contrail-analytics upgrade analytics contrail-analytics-.tgz or (for upgrading HA) helm -n contrail-analytics upgrade analytics contrai

{ "channel": "stable-4.7", "clusterID": "990f7ab8-109b-4c95-8480-2bd1deec55ff" } $ oc adm upgrade Cluster version is 4.1.0 Updates: VERSION IMAGE 4.1.2 quay.io/openshift-release-dev/ocp- re release@sha256:9c5f0df8b192a0d7b46cd5f6a4da2289c155fd5302dec7954f8f06c878160b8b $ oc adm upgrade --to-latest=true 1 $ oc adm upgrade --to= 1 $ oc get clusterversion -o json|jq ".items[0].spec" 第 第 6 章 acknowledge the start of an upgrade # file=/home/user/openshift-ansible/hooks/pre_compute.yml - name: note the start of a compute machine update debug: msg: "Compute machine upgrade of {{ inventory_hostname

I hate to OPERATE Kubernetes! Kubernetes Architecture Operating Kubernetes ● Installation ● Upgrade ● Healing ● Scaling ● Security ● Monitoring ● ... Installation - SSH - Install kubelet - $pkgmanager node1 node2 node3 Upgrade - SSH - Upgrade container runtime - Upgrade Kubelet Upgrade - master - SSH - Upgrade master components Upgrade - etcd - SSH - Upgrade etcd Upgrade kops AWS, GCP API should be v1.4.5 ● Scheduler should be v1.4.5 How to get there ● Upgrade all API servers Daemons to v1.4.5 safely one-by-one ● Upgrade all Scheduler Deployments to v1.4.5 ● Update status to v1.4.5 The

time • Upgrade Master & Node Components reliably • Canary Rollout • Master & Node Component Versions Management Motivation: Work Order Deployment Worker Order • Upgrade Nodes Versions • Upgrade Node Node 10.10.10.1 • Upgrade docker • Upgrade kubelet • Upgrade Node 10.10.10.2 • Upgrade docker • Upgrade kubelet …. Motivation: Work Order Deployment Disadvantages • Inconsistency • Non-failure-aware post Node state to kube- apiserver. Node-Operator: Scale Nodes Node-Operator Node-Operator: Upgrade Nodes Node-Operator Node-Operator: Grayscale Publish Node-Operator Kube-on-Kube-Operator: Overview

● Twitter ● User discussions ● Upgrade survey #IstioCon Common Feedback ● Users found upgrades challenging ● Releases were inconsistent ○ Release and Upgrade Notes ○ Release date slip ○ Release Istio community didn’t have a process #IstioCon Led To ● Upgrade Working Group ● Release Note Generation ● Definition of Done #IstioCon Upgrade Working Group Mission: To improve the stability, user user experience, and test infrastructure around Istio upgrades #IstioCon Upgrade Working Group - Stability ● Standards and processes ○ Control plane behavior ○ Data plane communication ● Promote revision-based

服务网格数据平面热升级技术分享 ServiceMesh Data-Plane Hot-Upgrade 阿里云服务网格团队 – 史泽寰 • 为什么需要服务网格数据面热升级 • 实现热升级 • 实践热升级 目录 Catalog 2 为什么需要服务网格数据面热升级 Why do we need Hot-Upgrade for ServiceMesh Data-Plane • 造成请求失败，影响业务质量 增加workload保持服务容量不变，应对大规模场景难以在扩容规模和操作便捷度上取 得令人满意的平衡 传统Sidecar升级方式的缺点 3 为什么需要服务网格数据面热升级 Why do we need Hot-Upgrade for ServiceMesh Data-Plane • 只替换/重启Sidecar • 替换/重启过程中进/出不会出现请求失败，连接失败 • 易于运维，可以控制升级策略 理想的Sidecar升级 io/envoy-hot-restart-1d16b14555b5 实现热升级 Implement Hot-Upgrade 6 • Sidecar生命周期管理能力 • 启动两个Sidecar，以进行Envoy热重启的排水流程两个实例并存的阶段 • 能够对整个热升级流程中的镜像替换进行控制 实现热升级 Implement Hot-Upgrade 7 • Sidecar生命周期管理能力 • 启动两个Sidecar，以